<?php
/**
 * COciColumnSchema class file.
 *
 * @author Ricardo Grana <rickgrana@yahoo.com.br>
 * @link http://www.yiiframework.com/
 * @copyright Copyright &copy; 2008-2011 Yii Software LLC
 * @license http://www.yiiframework.com/license/
 */

/**
 * COciColumnSchema class describes the column meta data of a Oracle table.
 *
 * @author Ricardo Grana <rickgrana@yahoo.com.br>
 * @version $Id: COciColumnSchema.php 3204 2011-05-05 21:36:32Z alexander.makarow $
 * @package system.db.schema.oci
 * @since 1.0.5
 */
class COciColumnSchema extends CDbColumnSchema
{
    /**
     * Extracts the PHP type from DB type.
     * @param string $dbType DB type
     * @return string
     */
    protected function extractOraType($dbType)
    {
        if (strpos ( $dbType, 'FLOAT' ) !== false)
            return 'double';
        
        if (strpos ( $dbType, 'NUMBER' ) !== false || strpos ( $dbType, 'INTEGER' ) !== false) {
            if (strpos ( $dbType, '(' ) && preg_match ( '/\((.*)\)/', $dbType, $matches )) {
                $values = explode ( ',', $matches [1] );
                if (isset ( $values [1] ) and ((( int ) $values [1]) > 0))
                    return 'double';
                else
                    return 'integer';
            } else
                return 'double';
        } else
            return 'string';
    }
    
    /**
     * Extracts the PHP type from DB type.
     * @param string $dbType DB type
     */
    protected function extractType($dbType)
    {
        $this->type = $this->extractOraType ( $dbType );
    }
    
    /**
     * Extracts the default value for the column.
     * The value is typecasted to correct PHP type.
     * @param mixed $defaultValue the default value obtained from metadata
     */
    protected function extractDefault($defaultValue)
    {
        if (stripos ( $defaultValue, 'timestamp' ) !== false)
            $this->defaultValue = null;
        else
            parent::extractDefault ( $defaultValue );
    }
}
